Tubing stripper



I. C. BELL TUBING STRIPPER Sapt. 15, 1 931 Filed April 29, 1927 3 Sheets-Sheet l R 0/ WM M /M W ww 2 w F z 17 W a a ll 2 1/1" M M w, 10/0 M 2 w 7 z U.

Sept. 15, 1931;.

L c. BELL 1,823,233

TUBING STRIPPER Filed April 29, 1927 3 Sheets-Sheet 2 I Z; 26 a Z--+ //l JW 6%??? Sept. 15, 1931.

I. c. BELL 1,823,233

TUBING S TRIPPER Filed Apr {i1 29, 1927 :5 Sheets-Sheet a INVENTOR Z'fie// Patented Sept; 15, 1931' UNITED STATES PATENT OFFICE.

IVAN C. BELL, OF DALLAS, TEXAS, ASSIGNOR TO THE GUIBERSON CORPORATION, OF DALLAS, TEXAS, A CORPORATION OF DELAWARE TUBING STRIPPER Application filed April 29, 1927. Serial No. 187,667.

This invention relates to new and useful improvements in tubing strippers.

The object of the invention is to provide certain improvements in connection with my co-pending application, .Serial N o. 122,-

635, filed July 15, 1926 whereby undue outward displacement or distortion of the stripping members is prevented and also whereby a close contact between the tubing and the stripping members is assured; and further whereby fluid leaks are obviated. A further object of the invention is to provide lateral or radial extensions on the outer wall of the apron, arranged so that .while engaging the inner wall of the housing, theywill not interfere with the compression of the apron by the fluid, which is free to pass up between the extensions.

Another object of the invention is to form the pedestal of the housing in such a manner that it may be readily attached to different sizes of adapters for fitting casing heads of various diameters,

A still further object of the invention is to formthe strip ing members so that they will be more yiel able, as well as to reduce the amount of material used.

A constructiondesigned to carry out the invention will be hereinafter described, together with other features of the invention.

The invention will be more readily understood from a reading of the-following specification and by reference to the accompanying-drawings, 111' which an example of the invention is shown and wherein:

Fig. 1 is an elevation showing a tubing stripper constructed in accordance'with my invention,

Fig. 2 is an underside View of thes'ame,

Fig. 3 is an inner elevation of one of the stripper members,

Fig. 4 is. an inner elevation of the complementary stripper member,

Fig. 5 1s a transverse vertical sectional view ofthe stripper taken on the line 5-5 of Fig. 2, I

Fig. 6 is ahorizontal cross-sectional view taken on the'line 66 of Fig. 5,

Fi 7 is a cross-sectional View taken on the line 74: of Fig. 3,

Fig. 8 is a cross-sectional view taken on the line 88 of Fig. 4,

Fig. 9 is a plan view of one of the stripper members, parts being in section,

Fig. 10, is an underside view of the same,

Fig. 11 is an elevation of the adapter, and

Fig. 12 is an outer elevation of one of the stripping members.

1n the drawings the numeral 10 designates one of the complementary members or sections of a split housing and 11 the other seetion. The section 10 is hinged to the section 11 at one side and carries a pair of hinge cars 12 straddling a pair of like cars 13 on the other section 11 and connected therewith by a pin '14. On the opposite side, the section 10 has a pair of ears 15 between which the circular head 16 of a latch bolt 17 is pivoted.

The belt has a yoke bar 18 mounted to slide thereon and provided with wings l9 engaging seats 20 formed in bosses 21 cast on the section 11 and straddling the ears 15 when the housing 1S closed. A nut 22 threaded on the bolt serves to force the bar toward the section 10, thus pulling the section 11 closed 1 each section extends outwardly and overhangs the portion 23, said portion 29 having an upstanding marginal flange 30. Each section also has a top plate 31 extending 1nwardly from its flange.

Under the plate and above the pedestal portion 23 each section has a semi-circular cavity or socket 32 for snugly receiving the body of a semi-circular elastic stripping member 33. This member may be made of soft rubber or any other elastic composition, suitable for the purpose. The curved face of the member is located inwardly toward the cenadapter fits in the casing head (not i ter ofv the housing from the edge of the top plate and is beveled at 34. Grooves 35 may be V is surrounded by an annular spacebelow the body of each member 33'. This space is open to the fluid and is utilized to compress the apron around the'tubing.

To prevent undue lateral or radial expansion of the split portions of the apron and to hold the apron snug about the Work, particularly when a coupling is passing through ping members.

and the fluid pressure is low, I provide spaced radial vertical ribs 38 on the apron. These ribs are preferably reduced in thickness toward their outer faces which latter contact with the inner wall of the pedestal.

The ribs will prevent-excessive outward displacement of the aprons and will sustain the same. At the same time the ribs will not interfere with the compression of the aprons by the fluid. While I have shown annular ducts 39 in the body of each stripping member as in my co-pending application, the stripping members may be constructed in any suitable manner -so long as the aprons and their reinforcing and sustaining projections are present. Each stripping member 33 is formed with radial pockets 4O directed inwardly-from its outer curved surface as is shown in Figs. 5,- 9 and 12. I The outer curved surface of each member is also provided with circumferential channels 41. These openings 40and 41 not only reduce the amount of material, but make the member more flexible and more easily compressed or expanded, as the case may be. It will be noted that two of the ribs 38 are split, portions being on the meeting faces of both members. This enables the use of a horizontal packing tongue 42 (Figs. 3 and 4) on each member fitting into a correlated socket 43 on the other member, whereby fluid leaks are retarded. Each member also has a vertical lug 44 extending along one side of its apron contiguous to its bore and engaging in a corresponding recess 45 in the other apron. The parts 44 and 45 with the parts 42 and 43 provide fluid-tight joints between the strip- Each member 33 has a groove 46 leading to the lower duct 39 from Y the upper outer end of the lug 36 at each'side of said member; said grooves formin laterals for supplying fluid to the duct w en the housing is closed and the stripping members are brought together.

The use of tubing strippers, or oil savers as they are frequently called, being well understoodin the art, a detailed description of a fluid tight joint.

the operation is not considered necessary. However, it is pointedout that when the sections 10 and 11 of the housing are closed the stripping members 33 will be brought together. By giving the meeting portions of the members a slight projection beyond the meeting edges of the housing sections, said members will be compressed and interlocked so as to form a fluid-tight joint. The tighteningof the nut 22 draws the sections into close contact. y 1

.The ducts 39, channels 4land radial pockets40 permit lateral expansion of the body portion of thestripping element, so that couplings may readily pass through. The grooves 35 will retain grease and help to pack off the bore. The spaces between the ribs 36 will permit the fluid to compress the apron about the tubing. and said ribs will act to prevent undue outward distortion of said apron.

Various changes in the size and shape of the difl'erent parts, as well as modifications and alterations, may be made withinithe scope f the appended claims.

What I claim, is:

1. A tubing stripper member comprising a body having a depending flexible apronprovided with outwardly and longitudinally spaced reinforcing projections extending throughout the length of said apron, for sustaining the apron throughout its length.

2. A tubin stripper member comprising a circular body provided with a reduced-dependin apron and having circumferential channe s in the outer surface of its body, said bod having pockets directed inwardly from sai channels, the body also being provided with an-axial bore and a circular duct within the body surrounding its bore.

3. A tubing stripper member comprising a circular body provided with a reduced depending apron and having circumferential channels inthe outer surface of its body, said body having pockets directed inwardly from said channels, the body also bein provided with an axialbore and a circular uct withnr the body surrounding its bore, said body being split andeach split portion having on its diametrical face a lug and a socket, the lug of one face engaging in the socket of the other face when the split portions are brought together, the. split portions of the body being elastic, whereby the lugs and sockets and the contacting faces may be compressed to form 4. A tubing stripping member comprising a body provided with an axial bore and an internal duct surrounding the bore, a flexible apron depending from the body and through whichthe bore is continued, and sustaining projections extending from the apron throughout the length thereof.

.' 5. A tubing strippingmembercomprising,

a body provided with an-axial bore and an internal duct surrounding the bore, a flefible apron depending axially from the body and through which the bore is continued and vertical ribs extendin outwardly rom the apron under the b y and positloned to sustain the axial apron against outward displacement throughout its length.

6. A tubing stripping member comprising, a body provided with an axial bore and an internal duct surrounding the bore, a flexible 1 apron depending from the body and throu h which the bore is continued, and vertical ri s extending outwardly from the apron under the body, some of said ribs having fluid passage grooves extending through their upper portions to the internal duct of the body.

7. As a sub-combination in aftubing stripper, a semi-circular strippin member having a body provided with a re uced de ending apron and provided with a seini-circu ar bore extending throu h said ,body and apron, the member having iametrical faces on eachside of the bore, sald apron having outwardly directed ribs connected at their upper ends with the body which overhan s said ribs, said ribs 26 extending the length of t e apron.

8. As a sub-combination in a tubin stripper, a semi-circular strippin member aving a body provided with a re uced depending apron and provided with a semi-circular bore 80 extending through said bod and apron, the 7 member having diametrical aces on each side of the bore, said apronhaving outwardly di= rected ribs connected at their upper ends with the body which overhangs said ribs, one of the diametrical faces havlng a transverse lug at the body portion and the other diametrical face having a complementary socket, one of the diametrical faces having a lug contiguous to the bore and extending longitudinally of the apron, the other diametrical face having a complementary socket conti none to the bore and also extending longitu inally of the apron. I

9. A tubing stripper comprising an entire- 1y elastic'body provided with a reduced axial apron which the body overhangs, the body and apron having a continuous central opening extending vertically therethrongi'i, the body havin an annular outer face provided with inwar ly directed pockets o l such area as to permit lateral expansion of said body without compressing the body vertically In testimony whereof I affix my signature.

. IVAN C. BELL. 

